Answer to Question #298515 in Physics for crocroo

Question #298515

A father pushes his young daughter on a sled up a 15o inclined-plane which is moving at a


constant velocity. If the push of the father is directed horizontally with a magnitude of


92.0 N, (a) how much work is done by the applied force of the father on the sled with the girl


up to a height of 3.25 m from the base of the inclined plane? (b) What is the work done by


the weight on the sled with the girl if its total mass is 35.0 kg?



1
Expert's answer
2022-02-16T08:35:08-0500

Given:

θ=15\theta=15^\circ

F=92.0NF=92.0\rm \: N

h=3.25mh=3.25\:\rm m

m=35.0kgm=35.0\:\rm kg


(a) the work done by the applied force

W1=Fd=Fh/sinθ=92.03.25/sin15=1155JW_1=Fd=Fh/\sin\theta\\ =\rm 92.0*3.25/\sin15^\circ=1155\: J

(b) the work done by the gravity force

W2=mgh=35.09.83.25=1115JW_2=mgh\\ =35.0*9.8*3.25=1115\:\rm J


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment